Baking-pan.



C. E. PIERCE.

BAKING PAN.

APPLICATION FILED .APR. 9. 1914.

Patented May 11, 1915.

viz 4 g THE NORRIS PETERS 60., PHOTO'LITHOH WASHINGTON, D. C

CHARLES E. PIERCE, 01? CAMBRIDGE, MASSACHUSETTS.

BAKING-PAN.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed April 9, 1914. Serial No. 830,854.

To all whom it may concern Be it known that I, CHARLES E. Prnnon, a citizen of the United States, and resident of Cambridge, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Baking-Pans, of which the following is a specification.

This invention relates to a baking pan composed of a flat sheet metal body and a wire frame attached to the edges of the body and projecting below the lower side of the pan to rest on a shelf in an oven or on the bottom of an oven and support the body above and out of contact with such shelf or bottom, the invention being an improvement on the type of pan shown by Letters Patent of the United States No. 868,121, dated October 15, 1907.

The invention has for its object to provide an improved construction whereby the strength of the pan is increased and the sheet metal body is prevented from sagging at its central portion and becoming overheated by the oven shelf or bottom.

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings forming a part of this specification: Figure 1 represents a bottom view of a pan embodying my invention; Fig. 2 represents a section on line 22 of Fig. 1; Fig. 3 represents a view of a portion of the underside of the frame reinforced as shown by Fig. 1; Fig. 4 represents a section on line H of Fig. 3; Fig. 5 represents a bottom view of a pan having a frame differently reinforced; Fig. 6 represents a section on line 6-6 of Fig. 5.

The same reference characters indicate the same or similar parts in all the views.

In the drawings, 12 represents a frame composed of a stout wire rod bent into substantially rectangular form.

13 represents a reinforcing strip of flat sheet metal, preferably steel, the strip being relatively thin and its thickness considerably less than the diameter of the wire composing the frame. In practice it is preferable to employ two strips 13, as shown. Each strip, 13 is rigidly attached at its ends to opposite portions of the frame 12, and is so arranged that its upper and its lower sides are located above the lower side of the frame, so that the upper side of the strip forms an elevated support preventing the central portion of the pan body hereinafter described from sagging to the level of the under side of the frame, the lower side of the strip being also above the lower side of the frame. The rigid attachment of the strip ends to the frame is preferably accomplished by electric welding, the location of the welded joints being indicated by the reference numeral 15, this location being such that the upper side of the strip is flush with the upper side of the frame and considerably above the lower side of the frame, the under side of the strip being also above the lower side of the frame, so that portions of the hooked ears of the pan body hereinafter described are adapted to extend across the under side of the strip, as indicated by Figs. 2 and 6.

18 represents the sheet metal body of the pan which is composed of a single fiat sheet, the corners of which are cut away and the edges rolled to form hooked cars 19 embracing the members or stretches of the frame between the corners thereof, the corners of the body being preferably reinforced by corner plates 20 having rolled edges forming hooked cars 21 embraced by portions of the ears 19 of the body, as shown by the above mentioned patent.

The frame 12 and strip or strips 13 constitute a grid, the upper surface of which is elevated sufficiently above a heated supporting surface in an oven in which the pan may be deposited to prevent contact between the body 18 and said heated surface, the strips 13 being also supported above said heated surface so that the body 18 cannot sag and become excessively heated by contact with the heated surface, or by heat conducted from said surface through the strips 13, said strips being prevented from sagging by the rigid connection of their ends to the frame 12. The strips 13 may be variously arranged, and may eX- tend parallel with two sides of the frame, as shown by Figs. 1 and 3, or diagonally, as shown by F ig. 5. The fiat strips 13 rigidly united at their ends to the frame 12 contribute materially to the strength and stiffness of the frame. In practice the thickness of the strips 13 is about three-sixteenths of an inch, while the sheet metal body is much thinner and is usually about one sixty-fourth of an inch in thickness. The cross section of the body and its hooked ears is indicated by a solid black line in Fig. 2.

Having described my invention, 1 claim:

1. In a baking pan, in combination, a marginal frame composed of a bent metal rod, a sheet metal reinforcing strip extending across the space bounded by the frame and rigidly secured at its ends thereto, the upper side of the strip being substantially flush with the upper side of the frame and the lower side of the strip being above the lower side of the frame, so that the stripengaging members of the frame form ribs below the ends of the strip, and acontinuous sheet metal body having rolled edges embracing the members of the frame, including said ribs, said frame, the rolled edges, and the reinforcing strip constituting a grid adapted to support the body above and out of contact with an oven shelf or bottom, and permitting the employment of a relatively thin body and of a relatively m thick strip which is prevented by the frame from sagging.

i 2. In a baking pan, in combination, a marginal frame composed of a bent metal rod, a sheet metal reinforcing strip extending across the space bounded by the frame, the ends of the strip being abutted against opposite members of the frame and welded thereto, the upper side of the strip being flush with the upper side of the frame and the thickness of the strip being less than the diameter of the wire of which'the frame CHARLES E. PIERCE. Witnesses G. F. BROWN, P. W. PEzzE'r'rI.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. V 

